installing fog lights on a 4kcsq

Hi all,
I just picked up a set of Hella fogs from a friend, and need some
tips/advice on installing them on my 87 4kcsq (I don't have any
instructions, hella's web page is awful). Can I wire these up so they'll
just come on with the headlights (low beams)? If so, how? Any concerns
about fuse size, wire size, fire extinguisher size that I need to know
about? Will this kind os stuff put my alternator into unhappy mode?
TIA!
Paul
87 4kcsq lighting up the earth
86 4kcsq lighter than ever now that I pulled the engine/tranny. Parts
still available!